Wednesday

April 16, 2014

April 16, 2014

Number of results: 1,295

**statistics**

Prep Courses? Scores for men (nationwide) on the verbal portion of the SAT test are normally distributed with a mean of 509 and a standard deviation of 112. Randomly selected men are given the Columbia review course before taking the SAT test. After the course, a sample of 49 ...
*Monday, June 28, 2010 at 7:22pm by STatistic*

**STATISTIC**

1. I took a sample of the grade point averages for students in my class. For 25 students, the standard deviation of grade points was 0.65 and the mean was 2.89. The standard error for the sample was: (3 marks) 2. The heights (in inches) of adult males in Bhutan are believed ...
*Sunday, August 11, 2013 at 3:00am by CHIMI*

**Statistic**

DOES ANYONE KNOWS HOW TO DO SIDE BY SIDE HISTOGRAM IN SPSS? THANKS FOR YOUR HELP
*Saturday, February 23, 2008 at 9:48am by Danielle*

**statistic**

The accounting department at Weston Materials, Inc., a national manufacturer of unattached garages, reports that it takes two construction workers a mean of 32 hours and a standard deviation of 2 hours to erect the Red barn model. Assume the assembley follow the normal ...
*Monday, July 28, 2008 at 4:18pm by savon*

**statistic**

The z value for 29 is (29-32)/2 = -1.5 The z value for 34 is (34-32)/2 = 1.0 The probability for 32 to 34 is 34.1% I used the graphical tool at http://psych-www.colorado.edu/~mcclella/java/normal/accurateNormal.html to get that last result
*Monday, July 28, 2008 at 4:18pm by drwls*

**statistic**

the accontieg depatment at
*Monday, July 28, 2008 at 4:18pm by katie*

**Statistic**

Under 20 21-30 31-40 Male 12 12 17 Female 13 16 21 If two people are selected at random, what is the probability they are both female?
*Sunday, August 24, 2008 at 11:02pm by Angela*

**Statistic**

There are a total of 41 males and 50 females. The probability of picking two females a row (if each can be picked only once) is (50/91)x(49/90) = 0.2991
*Sunday, August 24, 2008 at 11:02pm by drwls*

**Statistic**

You plan to conduct a political poll of people in Berkeley, asking whether people prefer apples (A) or bananas (B). You have been endowed with the ability to select people completely at random from the population of Berkeley. If you ask n randomly selected people which they ...
*Monday, October 13, 2008 at 10:20pm by Anonymous*

**Statistic**

Your company wants to conduct a salary survey for the position of Accounting Assistant II. The estimated salary range is $4,500, the margin of error should be $100 and the desired level of confidence is 95%. What is the optimal sample size for this salary survey?
*Monday, October 20, 2008 at 12:19am by Marilyn*

**Statistic**

A restaurant that bills its house account monthly is concerned that the average monthly bill exceeds $200 per account. A random sample of twelve accounts is selected, resulting in the sample mean of $220 and a sample standard deviation of $12. The researchers have determined ...
*Monday, October 20, 2008 at 12:22am by Marilyn*

**Statistic**

You shouldn't be trying to get answers to the final here!
*Monday, October 20, 2008 at 12:19am by Richard*

**Statistic**

n = [(z*sigma)/E]² = [1.96*$4,500)/$100]² = ($77,792,400 / $10,000) = 7,779.24 = 7,780
*Monday, October 20, 2008 at 12:19am by Joe*

**statistic**

Given TWO SETS of congruent angles, what is the probability of selecting two consecutive angles that are congruent?
*Wednesday, December 3, 2008 at 12:30am by mitch*

**STATISTIC**

What is the signal change of 58 with the distributed mean of 35,standard deviation 10, using .o1 level
*Sunday, July 19, 2009 at 4:02pm by JACKSON*

**statistic**

Discuss the importance of a āp-valueā in relation to statistical testing. Discuss the concept of Anova and itās applicability in the workplace? Define the following terms related to an ANOVA in terms that the everyday person can understand, and then discuss why you would ...
*Monday, August 17, 2009 at 11:21pm by brenda*

**statistic**

P = probability that something would occur solely on the basis of chance. If P value is significantly small, you would reject your null hypothesis. Since ANOVA is not my area of expertise, I searched Google under the key words "ANOVA Workplace" to get these possible sources: ...
*Monday, August 17, 2009 at 11:21pm by PsyDAG*

**statistic**

A researcher conducts a t test for dependent means in which it is predicted that there will be a decrease in unemployment from before to after a particular job-skills training program. The cutoff "t" needed is -1.8333. The standard deviation of the distribution of means of ...
*Monday, October 5, 2009 at 3:07pm by stat*

**Statistic**

Twenty students assigned to an experimental group receive 30 in a control group has a mean of 38 on the test (with an estimated population standard deviation of 3); the control group has a mean of 35 (with an estimated population standard deviation of 5). Using the .05 level, ...
*Saturday, October 10, 2009 at 11:18pm by Anonymous*

**Statistic**

Four researcher participants take a test of manual dexerity(high scores mean better dexerity) and an anxiety test(high scores mean more anxiety). The scores are as followed. PersonDexerityAnxiety 1 1 10 2 1 8 3 2 4 4 4 -2
*Saturday, October 10, 2009 at 11:33pm by Anonymous*

**Statistic**

There is no question
*Saturday, October 10, 2009 at 11:33pm by drwls*

**Statistic**

Even with no question, the data suggest a small, inverse relationship between anxiety and dexterity. However, there is not enough data to indicate that this is a significant result. The n is too small, and you do not indicate the possible range of scores on the scales. For ...
*Saturday, October 10, 2009 at 11:33pm by PsyDAG*

**Statistic**

Twenty students assigned to an experimental group receive 30 in a control group has a mean of 38 on the test (with an estimated population standard deviation of 3); the control group has a mean of 35 (with an estimated population standard deviation of 5). Using the .05 level, ...
*Sunday, October 11, 2009 at 12:28pm by Anonymous*

**Statistic**

Im confused by your statement "Twenty students assigned to an experimental group receive 30 in a control group"
*Sunday, October 11, 2009 at 12:28pm by economyst*

**statistic**

Assume that the salaries of elementary school teachers in the United States are normally distributed with a mean of $34,000 and a standard deviation of $2000. What is the cutoff salary for teachers in the bottom 10%?
*Monday, October 19, 2009 at 11:27am by shannen*

**statistic**

Find a Percentile to Z-Score Calculator. You can Google one, and likely there's a table of this in your text. That'll tell you how many SD below the mean you have to go. I make it about -1.28 standard deviations, so that'll be about 34,000 - (1.28 * 2000)
*Monday, October 19, 2009 at 11:27am by jim*

**Statistic**

A school counselor tests the level of depression in fourth graders in a particular class of 20 students. The counselor wants to know whether the kind of students in this class differs from that of fourth graders in general at her school. On the test, a score of 10 indicates ...
*Sunday, December 6, 2009 at 6:01pm by Anonymous*

**Statistic**

18. Twenty students randomly assigned to an experimental group receive an instructional program; 30 in a control group do not. After 6 months, both groups are tested on their knowledge. The experimental group has a mean of 38 on the test (with an estimated population standard ...
*Saturday, February 20, 2010 at 1:32pm by Doris I*

**Statistic**

12. Four research participants take a test of manual dexterity (high scores mean better dexterity) and an anxiety test (high scores mean more anxiety). The scores are as follows. Person Dexterit Anxiety 1 1 10 2 1 8 3 2 4 4 4 -2
*Saturday, February 20, 2010 at 1:32pm by Doris I*

**Statistic**

18. Can you do a t test? The distributions will overlap with control group having a greater spread of scores. Consult your text for the differences between these two t tests. Having to think it through to explain it to someone else will help you to understand the similarities ...
*Saturday, February 20, 2010 at 1:32pm by PsyDAG*

**Statistic**

n: 12 Mean: 220.00 SD: 12.00 α: 0.05 H0:<=200 H1:>200 Reject H0 if t > 1.796 t=(220.00 - 200.0)/(12.00/sq 12) t= 20.00 / 3.46 t= 5.77 Reject H0 because t value is greater than 1.796
*Monday, October 20, 2008 at 12:22am by Melissa*

**statistic**

You draw a random sample of 300 employee records from the personnel file and find that the average years of service per employee is 6.3, with a standard deviation of 3.0 years. a. What percentage of the workers would you expect to have more than 9.3 years of service? b. What ...
*Tuesday, May 11, 2010 at 11:48pm by carp;*

**statistic**

Let's assume there are 3 people in Room A and another 3 people in Room B. The ages of the people in Room A are 25, 25, and 25. The ages of the people in Room B are: 10, 25, and 40. The mean of the ages in both rooms is 25. Does that mean that both room have populations that ...
*Wednesday, May 12, 2010 at 12:27am by carol*

**statistic**

Standard Deviation = SQRT [ {sqr(10-25) + sqr (25-25) + sqr (40-25)}/3 ]
*Wednesday, May 12, 2010 at 12:27am by Mahendra*

**statistic**

Z = (score - mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions from your Z scores.
*Tuesday, May 11, 2010 at 11:48pm by PsyDAG*

**statistic**

Compute a simple price index for each of the four items. Use 2000 as the base period
*Thursday, May 13, 2010 at 11:56pm by carol*

**statistic**

What 4 items? You copy and paste does not work, so you need to type the data.
*Thursday, May 13, 2010 at 11:56pm by PsyDAG*

**statistic**

Jim has a 5-year-old car in reasonably good condition. He wants to take out a $30,000 term (that is, accident benefit) car insurance policy until the car is 10 years old. Assume that the probability of a car having an accident in the year in which it is x years old is as ...
*Saturday, June 26, 2010 at 1:16pm by john*

**statistic**

The first class in a relative frequency table is 50ā59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate?
*Sunday, August 1, 2010 at 1:27pm by Trina*

**statistic**

Assume that the salaries of elementary school teachers in the United States are normally distributed with a mean of $34,000 and a standard deviation of $2000. What is the cutoff salary for teachers in the bottom 10%?
*Monday, October 19, 2009 at 11:27am by vickey*

**statistic**

3. Indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. The 29th percentile is greater than the 30th percentile. b. The median is greater than the first quartile. c. The third quartile is greater than the first ...
*Monday, August 9, 2010 at 5:10pm by Trina*

**statistic**

b and c are definitely true. Median = second quartile. d can be true, but is not necessarily so. 1, 2, 3, 4, 5, 6, 7, both are 4 1, 2, 3, 4, 5, 6, 10, median still 4, but mean is higher. Mean is most effected by deviant scores. a and e are false.
*Monday, August 9, 2010 at 5:10pm by PsyDAG*

**Statistic**

6.18 Calculate each binomial probability: a. Fewer than 4 successes in 12 trials with a 10 percent chance of success. b. At least 3 successes in 7 trials with a 40 percent chance of success. c. At most 9 successes in 14 trials with a 60 percent chance of success. d. More than ...
*Friday, August 27, 2010 at 1:02pm by Kim *

**Statistic**

6.16 Calculate each binomial probability: a. X = 2, n = 8, š = .10 b. X = 1, n = 10, š = .40 c. X = 3, n = 12, š = .70 d. X = 5, n = 9, š = .90
*Friday, August 27, 2010 at 1:05pm by Kim *

**statistic**

A lottery ticket has a grand prize of $28 million. The probability of winning the grand prize is .000000023. Based on the expected value of the lottery ticket, would you pay $1 for a ticket? Show your calculations and reasoning clearly.
*Friday, August 27, 2010 at 1:09pm by Kim *

**statistic**

the expected return is 28 million x .000000023 = 0.64 no, I would pay 64 cents.
*Friday, August 27, 2010 at 1:09pm by Reiny*

**statistic**

. A company is considering installing new machines to assemble its products. The company is considering two types of machines, but it will buy only one type. The company selected eight assembly workers and asked them to use these two types of machines to assemble products. The...
*Friday, September 24, 2010 at 10:46am by jessika*

**statistic**

Hypothesis Test: Independent Groups (z-test) Machine I Machine II 22.25 23.63 mean 3.06 1.30 std. dev. 8 8 n -1.375 difference (Machine I - Machine II) 1.175 standard error of difference 0 hypothesized difference -1.17 z .2421 p-value (two-tailed)
*Friday, September 24, 2010 at 10:46am by jessika*

**statistic**

o Formulate a hypothesis statement regarding your research issue.? o Perform a regression hypothesis test on the data.? o Interpret the results of your regression hypothesis test.? 11,809 12,009 12,095 12,050 11,671 11,952 11,975 11,774 10,864 11,402 11,871 11,794 11,674 12,...
*Saturday, October 9, 2010 at 7:06pm by jessika*

**statistic**

ok olvidenlo ya entregue
*Saturday, October 9, 2010 at 7:06pm by jessika*

**statistic**

rank the following in increasing order and find the position and value of the 11th percentile show all work. 7 5 3 2 9 6 4 3 8 5 5 8
*Tuesday, October 12, 2010 at 7:59am by janet*

**Statistic**

11.5 Consider an experiment with four groups with eighth values in each. For the following ANOVA summary table, fill in all the missing results. Source Degree of freedom Sum of Square Mean Square(Variance) F ...
*Thursday, October 21, 2010 at 4:41pm by GG*

**Statistic**

I am getting problems with my calculations. For the first part of the question I got 68 when I try another calculation I got 1. One of the method used was Degree of freedom =(r-1)(c-1). TABLE 12-7 The director of transportation of a large company is interested in the usage of ...
*Sunday, October 24, 2010 at 1:49am by doug*

**Statistic**

TABLE 12-11 Parents complain that children read too few storybooks and watch too much television nowadays. A survey of 1,000 children reveals the following information on average time spent watching TV and average time spent reading storybooks Average time spent reading story ...
*Sunday, October 24, 2010 at 1:57am by GN*

**Statistic**

TABLE 12-6 The dean of a college is interested in the proportion of graduates from his college who have a job offer on graduation day. He is particularly interested in seeing if there is a difference in this proportion for accounting and economics majors. In a random sample of...
*Sunday, October 24, 2010 at 2:15am by NDW*

**Statistic**

TABLE 12-3 A computer used by a 24-hour banking service is supposed to randomly assign each transaction to one of 5 memory locations. A check at the end of a day's transactions gave the counts shown in the table to each of the 5 memory locations, along with the number of ...
*Sunday, October 24, 2010 at 2:24am by WMD*

**Statistic**

If we use the ÷2 method of analysis to test for the differences among 4 proportions, the degrees of freedom are equal to: A) 3 B) 4 C) 5 D) 1
*Sunday, October 24, 2010 at 2:29am by Anonymous*

**Statistic**

X^2 = Σ [(O-E)^2/E] Where O = Observed Frequency and E = Expected Frequency E = (column total*row total)/grand total (a) (2-1)(2-1) = ? (b) Local total/grand total = ? (c) E = ?
*Sunday, October 24, 2010 at 1:49am by PsyDAG*

**Statistic**

I am not familiar with some of the symbols you are using, and I do not have access to Table 12-6. However: Ho: Mean 1 = Mean 2 Ha: Mean 1 ≠ Mean 2 I hope this helps.
*Sunday, October 24, 2010 at 2:15am by PsyDAG*

**Statistic**

Using this TABLE 12-6 for the following questions: The dean of a college is interested in the proportion of graduates from his college who have a job offer on graduation day. He is particularly interested in seeing if there is a difference in this proportion for accounting and...
*Sunday, October 24, 2010 at 1:00pm by Anonymous*

**Statistic**

the percentile rank of t5 = 1.476
*Wednesday, October 27, 2010 at 8:46am by vee*

**STATISTIC**

Mrs. Carlson has discovered that the students in her class who watch a larger amount of television do more poorly on her exams compared to those who watch a smaller amount of television. Which of the following conclusions can Mrs. Carlson draw? Explain your answer. a. Watching...
*Monday, November 1, 2010 at 3:05pm by TOM*

**statistic**

. The average time a student spends studying just prior to a test is 36 minutes with a standard deviation of 7 minutes. This distribution approximates a normal curve. Find the percent of students who study just prior to the test for. a) more than 60 minutes b) between 55 and ...
*Thursday, November 18, 2010 at 10:20pm by badel*

**statistic**

the mean of adult men is 172 pounds with a standard deviation of 29 pounds. ask 20 men thier weight and use excel to calculate the mean. test the hypothesis that the mean is not 172 pounds at the .10 significance level. and how many men should be sampled if you want to be 98% ...
*Saturday, December 4, 2010 at 4:48pm by natasha*

**statistic**

Quiz has 6 questions. Each question has five possible answers, only one of each 5 answers is correct. If student randomly guesses on all six questions, what is the probability to answer 2 questions right? Tip: first, you have to define parameters of Binomial distribution: n - ...
*Saturday, December 4, 2010 at 11:16pm by tanya*

**statistic**

Assuming the 6 questions are independent, n=6 (questions) p=probability of guessing the right answer (1/5) x=exactly the number of successes over the 6 questions (2). Look up the appendix table, or the Excel function to calculate the probability. Alternatively, use the formula...
*Saturday, December 4, 2010 at 11:16pm by MathMate*

**statistic**

We have no access to your sample data. Z = (mean1 - mean2)/standard error (SE) of difference between means SEdiff = √(SEmean1^2 + SEmean2^2) SEm = SD/√(n-1) If only one SD is provided, you can use just that to determine SEdiff. Find table in the back of your ...
*Saturday, December 4, 2010 at 4:48pm by PsyDAG*

**statistic**

The ball team was accused of cheating their soda drinkers by not putting enough soda in their 12 oz. cups. 15 cups were selected at random and found to have a mean of 11.7 oz., sd of 0.5 oz., at a significance level of .01. Test the claim that the customers are being cheated.
*Tuesday, December 7, 2010 at 9:42am by shirley*

**Statistic**

The number of customers who enter a supermarket each hour is normally distributed with a mean of 600 and a standard deviation of 200. The supermarket is open 16 hours per day. what is the probability that the total number of customers who enter the supermarket in one day is ...
*Wednesday, December 8, 2010 at 5:54am by Tony*

**Statistic**

This is an odd supermarket, having even traffic all day. Most would kill for this even traffic flow. number per hour= 10,000/16=625 standard deviation 200 number standard deviations: 25/200 Look that up in your tables, or here:
*Wednesday, December 8, 2010 at 5:54am by bobpursley*

**statistic**

how a t Test for a dependent variable can be of great value in applying a new approach to the treatment of aggressive behavior to a small group of students. Why would this t Test be preferred to using another test statistic?
*Wednesday, December 15, 2010 at 12:42am by smith*

**statistic**

roll 2 standard dice and add the numbers. what is the probability of getting a number larger than 9 for the first time on the third roll?
*Saturday, January 15, 2011 at 11:31am by linn*

**statistic**

A company is considering installing new machines to assemble its products. The company is considering two types of machines, but it will buy only one type. The company selected eight assembly workers and asked them to use these two types of machines to assemble products. The ...
*Sunday, January 23, 2011 at 3:02am by Jose*

**statistic**

A business firm considers the number of years of formal education, X, a prime factor in screening applicants for employment in its plant. Assume from past experience that X ~ N (10.6, 2.5), where 10.6 is the mean and 2.5 is the standard deviation. (a) If an applicant falls ...
*Wednesday, January 26, 2011 at 1:18am by Tian*

**statistic**

Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions indicated. Use the corresponding Z scores to find the scores with the equation above.
*Wednesday, January 26, 2011 at 1:18am by PsyDAG*

**statistic**

1. Past experience indicates that the variance, ¦Ņ2x, of the scores, X, obtained on the verbal portion of a test is 5,625. Similarly, the variance ¦Ņ2y, of the scores, Y, on the mathematical portion is 2,500. (a) A random sample of size n = 64 yields a sample mean verbal score...
*Sunday, January 30, 2011 at 12:45am by Tian*

**statistic**

2. A sociologist conducted a study of divorce patterns in a Midwestern city. In the study, 200 divorced people were selected at random, and X, the number of years married before divorce, was measured. From this sample, it was found that the sample mean was 8.7 years, and that ...
*Sunday, January 30, 2011 at 12:45am by Tian*

**statistic**

3. In studying the efficiency of the federal court system, we look at the random variable, X, the amount of time elapsing between the filing of a charge and the trial date. A random sample of n = 86 cases yields a sample mean of 11.4 months, with sample variance s2x = 5.8 ...
*Sunday, January 30, 2011 at 12:45am by Tian*

**statistic**

(a) and (b) Variance = SD^2 95% = mean ± 1.96 SEm SEm = SD/√(n-1) (c) 90% = mean ± 1.645 SEm (d) Z = (mean1 - mean2)/standard error (SE) of difference between means SEdiff = √(SEmean1^2 + SEmean2^2) SEm = SD/√(n-1) If only one SD is provided, you can use just...
*Sunday, January 30, 2011 at 12:45am by PsyDAG*

**statistic**

Use the previously indicated table to find Z values ± 40% from mean (a) and ± 25% from mean (b). Confidence interval = mean ± ? SEm SEm = SD/√(n-1)
*Sunday, January 30, 2011 at 12:45am by PsyDAG*

**statistic**

See previous posts.
*Sunday, January 30, 2011 at 12:45am by PsyDAG*

**Statistic**

The professors at Wilfred Laurier University are required to submit their final exams to the registrarās office 10 days before the end of the semester. The exam coordinator sampled 20 professors and recorded the number of days before the final exam that each submitted his or ...
*Monday, January 31, 2011 at 1:23am by naquila*

**Statistic**

Examine the three samples listed here. Without performing any calculations, indicate which sample has the largest amount of variation and which sample has the smallest of variation. Explain how you produced your answer. a) 17 29 12 16 11 b) 22 18 23 20 17 c) 24 37 6 39 29
*Monday, January 31, 2011 at 1:27am by Denise*

**Statistic**

Which has the largest spread between high and low score?
*Monday, January 31, 2011 at 1:27am by PsyDAG*

**Statistic**

mean = Σscores/number of scores For median, arrange scores in order of value. Median is between 10th and 11th score. Mode(s) is(are) most frequently observed score(s).
*Monday, January 31, 2011 at 1:23am by PsyDAG*

**statistic**

To learn more about the size of withdrawals at a banking machine, the proprietor took a sample of 75 withdrawals and recorded the amounts. Determine the mean and standard deviation of these data, and describe what these two Statistics tell you about the withdrawal amounts. ...
*Monday, January 31, 2011 at 11:35am by qui*

**Statistic**

Calculations please, Calculate the first, second, and third quartiles of the following samples. 5 8 2 9 5 3 7 4 2 7 4 10 4 3 5 23
*Monday, January 31, 2011 at 11:36am by Delisha*

**Statistic**

GMAT and GPA Scores for 12 MBA Students Compute the covariance and the determination and interpret your findings. GMAT- 599 689 584 631 594 643 MBA GPA- 9.6 8.8 7.4 10.0 7.8 9.2 GMAT- 656 594 710 611 593 683 MBA GPA- 9.6 8.4 11.2 7.6 8.8 8.0 Show me calculations please
*Monday, January 31, 2011 at 11:38am by teresa*

**Statistic**

Delisha/James, please see your 1st post at 1:21 am under "James". Your post was answered there.
*Monday, January 31, 2011 at 11:36am by helper*

**statistic**

Mean is measure of central tendency and standard deviation is measure of variability.
*Monday, January 31, 2011 at 11:35am by PsyDAG*

**Statistic**

Statistic Question: I want to first start out by thanking you for your help and I also want to inform you that I do not have a strong Math back ground and is taking an Accelerated program that included this class of which I do not understand a word of so I really need help ...
*Thursday, February 3, 2011 at 4:58pm by Tammy*

**Statistic**

You say its rank dropped to sixth, but only name three brands above. In addition, you do not provide the needed data.
*Thursday, February 3, 2011 at 4:58pm by PsyDAG*

**Statistic **

Case 6.4 Maternal Serum Screening Test for Down syndrome Please keep in mind that I do not have a Math back ground so this is brand new to me and like a foreign language that I have never seen nor heard spoken before. Thank you for your help in advance. Pregnant women are ...
*Saturday, February 5, 2011 at 8:14pm by Tammy*

**statistic**

If you make a table for all the combinations of rolling dice you will notice that there are 6/36 possible ways to roll a sum greater than a nine. You are going to roll the dice 3 times and you do not want the sum of greater than 9 on the first 2 rolls but you do want a sum ...
*Saturday, January 15, 2011 at 11:31am by Learning in Progress*

**statistic**

where to find the crime rate of US?
*Saturday, March 5, 2011 at 5:02pm by titi*

**statistic**

http://www.disastercenter.com/crime/uscrime.htm
*Saturday, March 5, 2011 at 5:02pm by Ms. Sue*

**statistic**

Given a normal population with ģ = 40 and ó = 8, what is the probability of obtaining a sample mean between 39 and 41 for a sample of n = 16 scores?
*Wednesday, March 9, 2011 at 10:06pm by kim*

**statistic**

Z = (score - mean)/standard error of the mean SEm = SD/√(n-1) (or to make it easier, n) Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the probabilities related to these Z scores.
*Wednesday, March 9, 2011 at 10:06pm by PsyDAG*

**statistic**

what should i know in topic hypothesis testing?
*Monday, March 14, 2011 at 9:41am by alya*

**statistic**

http://www.google.com/search?client=safari&rls=en&q=hypothesis+testing&ie=UTF-8&oe=UTF-8
*Monday, March 14, 2011 at 9:41am by PsyDAG*

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